【摘 要】
：
Cyanidin-3-glucoside, cyanidin-3-(6″-malonyl)-glucoside, and cyanidin-3-glucoside-derived pyranoanthocyanins which were three major anthocyanins of blood orang
【机 构】
：
Department of Applied Biology,College of Biological and Environmental Sciences,College of Food Scien
论文部分内容阅读
Cyanidin-3-glucoside, cyanidin-3-(6″-malonyl)-glucoside, and cyanidin-3-glucoside-derived pyranoanthocyanins which were three major anthocyanins of blood orange, were obtained using a Toyopearl TSK HW-40S column chromatography. Then, thermal degradation kinetics of the three major anthoeyanins was studied at selected temperatures (70, 80, and 90℃). Degradation parameters such as k and t1/2 values were determined. The activation energy (Ea) values for cyanidin3-glucoside, cyanidin-3-(6″-malonyl)-glucoside and cyanidin-3-glucoside-derived pyranoanthocyanin were 75.4, 79.5, and 81.7 kJ mol-1, respectively. Ea values suggested that cyanidin-3-glucoside-derived pyranoanthocyanin had the highest stability, followed by cyanidin-3-(6″-malonyl)-glucoside and cyanidin-3-glucoside. However, t1/2 values indicated cyanidin3-glucoside-derived pyranoanthocyanin degraded faster than cyanidin-3-(6″-malonyl)-glucoside and cyanidin-3-glucoside at selected temperature.
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